It should have been HP-23A and I have already located one,thanks Guys. Martin L Tippin 140 Monarch Lane Branson Mo 65616 Listserver Subscription:listserv at listserv.tempe.gov - "subscribe heath 'name' 'call'" Listserver Submissions: heath at listserv.tempe.gov Listserver Unsubscribe: listserv at listserv.tempe.gov - -"signoff heath"